How long do mammogram results take?

Not usually after a screening mammogram, the routine kind. The images are taken, you go home, and a radiologist reads them later, comparing them with your earlier mammograms. A diagnostic mammogram, the kind done to check a lump or after a callback, is different. The radiologist works with the technologist while you're there, so you usually hear during the appointment or soon after.

For a screening, centers publish very different times. Advocate Health Care gives same-day results for mammograms done before 2 p.m. on a weekday, if you have a portal account and your earlier mammograms are on hand. MD Anderson posts results to MyChart in 48 to 72 hours. Cleveland Clinic says usually within a week, and Breastcancer.org puts the range at a few hours to 10 days.

All of them work under a federal law, the Mammography Quality Standards Act. The center must give you a summary in plain language within 30 days of the exam, handed to you, posted to your portal or mailed. If the read looks suspicious, the deadline is 7 days from the read, for you and for your doctor.

Often because of your old mammograms. A radiologist reads a mammogram by comparing it with the last one, so when the earlier images are at another center, the read can wait for them. The University of Kansas Cancer Center says outside comparison images can make the final report take longer. A weekend or a holiday pushes the report into the next week.

Sometimes the report comes back incomplete because the radiologist needs those earlier images. That result has its own clock: the center must issue a follow-up report within 30 days of the first one, whether or not the old images arrive.

Then there's the letter. Some centers post to the portal within days and mail the letter after, and AdventHealth says the steps usually add up to a couple of weeks.

You can take the first delay off the table before the appointment. If your last mammogram was done somewhere else, ask that center to send the images to the new one. If you'd like your own copy of the reports too, a free records request letter drafts the request for you.

That's up to the health system. The University of Kansas Cancer Center releases every radiology result in MyChart right away, and MD Anderson within 48 to 72 hours. Federal rules against holding back health information have applied since April 5, 2021, so the result can reach your portal before anyone calls. If you'd rather hear it from a person first, you can ask to have it held until your doctor has looked.

An empty portal a day or two after a screening is normal at most centers. It reflects the hospital's settings and says nothing about your result. Reading your results before your doctor calls covers how to read one in that gap.

If the radiologist sees something suspicious, the 7-day deadline applies: the center has a week from the read to get a written summary to you and your doctor. More often, you get a callback instead. It means the read is incomplete and the radiologist wants more pictures or a look at your old ones. On the report, that's BI-RADS 0.

A callback isn't a cancer result. Fewer than 1 in 10 women called back are found to have cancer. Callbacks are more common after a first mammogram, when there's nothing to compare with, and for women with dense breasts or who haven't gone through menopause.

A callback also starts the one wait no federal rule times: the gap between the phone call and the diagnostic appointment. The center's calendar sets it, and one woman posting about hers was three weeks out. When the call comes, ask for the first open slot and a spot on the cancellation list. The diagnostic mammogram is usually read while you're there, so that second wait tends to end at the visit.

Speed doesn't tell you much either way. One woman got a call the morning after a diagnostic mammogram and ultrasound asking her to come in and talk about the results. She expected the worst, and it was negative. Some centers call with every result and some only write.

If nothing has come, don't assume you're fine. Reports get delayed or sent to an old address. If you've heard nothing 10 days after a screening, call the imaging center and ask whether it was read and where the summary went. At 30 days with no summary, the center has missed its legal deadline, and the FDA tells patients to contact the center or their doctor.